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You r not only decreasing triangle area but also circle segment which is wrong.

Question:

A cow is tethered at point A by a rope. Neither the rope nor the cow is allowed to enter the triangle ABC. If ∠BAC = 30º and AB = AC = 10 m, what is the area that can be grazed by the cow given that length of the rope is 12m? (In square meter)

Options:

A)

$\frac{133\pi}{6}$

B)

\(144\pi-25\)

C)

$132\pi $

D)

$\frac{176\pi}{3}$

Solution:

**Ans: (c)**